Plate-scraping machine



March 9 1926. 1,576,] 70

H. F. YELDING PLATE SCRAPING MACHINE Filed Jan. 11, 1924 s Sheets-Sheet 1 Mai-ch 9 1926.

v 1,576,170 H. F. YELDING A PLATE SCRAPING MACHINE I Filed Jan. 11, 1924 3 Sheets-Sheet 2 March 9,1926. 1,576,170

. H. F. YELDING PLATE SCRAPING MACHI NE Filed Jan. 11, 192 5 3 Sheets-Sheet 5 Patented Mar. 9, 1926.

UNITED STATES "PATENT OFFICE.

HUBERT F. YELDING,-OF PHILADELl-I-IIA, PENNSYLVANIA, ASSIGNQR TO THE UNITED STATES METALLIC PACK-ING- COMPANY, PHILADELPHIA, PENNSYLVANIA, A

CORPORATION OF PENNSYLVANIA.

PLATE-SCRAPING MACHINE!" Application filed January 11, 1924. Serial No. 685,639.

To all whom it may concern:

Be it known that I, Honnn'r' F. YnLDrNc, a citizen of the United States of America, and resident of jPhiladelphia,county of Philadelphia, tate of Pennsylvania, have invented certain new and useful Improvement in Plate-Scraping Machines, of which the following is a true and exact description, reference being had to the accompanying drawings, which form a part thereof.

My invention relates to a. machine for scraping plates such as ship plates, for the purpose of removing old paint or the like. The object of my invention is to provide a device whereby such deposits can be rapidly removed and in which the tools effectively act on the surface of the plate both by impact and as scrapers.

The nature of my invention will be best understood as described in connection with the drawings in which i V Figure 1 is a front elevation of a machine embodying my invention.

Figure 2 is a section on line 22 of Fig. 1.

Figures 8 and 4; are similar sectional views showing the tools and connecting devices in different positions, and

Figures 5 to 9 are views .showing a preferred modification of my machine with the tools and their connections shown in various positions they occupy when the ma chine is at work.

A indicates the casing of the machine having a tool containing portion A formed with an opening A on the side presented to the plate to be cleaned, indicated at H. A indicates a handle for holding the machine in position. B indicates the motor which may be of any convenient kind. I) is the shaft driven by motor B and D, D", are the tool holding discs secured to the shaft- 1). C, C, are rollers located at each end of th opening A E, E, etc. arepivots symmetrical y disposed in discs D, D F, F, F F Figs. 1 to i, aretool holders pivoted on pivots E, carrying tools f and each having arms F and F connected together by pivotally connected links G, G, etc, so as to connect all the tool holders in series and in such manner that they will rotate together in alternately opposit directions. To insure that the tools shall come successively into contact with the plate to be scrap d a st p should e p ovided to limit the rotative movement of the tools on their pivots and in the construction of Figs. 1 to 4, this is provided by the abutment of the arms F with links G as shown at I.

In the modified construction of Figs. .5 to 9, the inter-engagement of the tools here indicated at FF, FF, FF and FF is pro vided for by'the segmental gears J, J J J from which the tools extend and which connect them in series to turn on the pivots E, E, etc, in alternately opposite directions.

In operation the shaft D and tool carrying'discs D, D are rotated by the motor and the tool is pressed against the plate H to be cleaned with the opening A facing the discs and the rolls C, C, in contact there with, and, referring to Figs. 2 to 4, and assuming thetools to be in the position shown in Fig. 3, the tool of carrier F first comes in contact with the plate H and as the discs revolv it is turned backward on its pivot E and through its arm F and connecting rod G acts upon the arm F of the tool carrier F so as to rotate it forward on its pivot E, as shown in Fig. 4. This backward rotation of the tool carrier F and forward rotation of the tool carrier F is continued until the tool of carrier F comes in contact with the work, as shown in Fig. 2, this contact being effected with a sharp blow as the tool is carried forward, not only by the rotary motion of the carrier discs, but by its own rotation on its pivot E. After coming incontact with the work, as shown in Fig. 2, the tool of carrier F is held pressed against the work so long as the tool of car-' rier F remains in contact with it and the tool of carrier F is also pressed against the work with the result that so long as both of these tools remain in contact with the work they scrape off the surface of the plate H and act energcticallyto remove any adhering substances such as paint. It will readily be seen that each consecutive pair of tools are thus brought into contact with the work and act partly by impact and partly by scraping action to remove the paint.

In the construction shown in Figs. 5 to 9, the effective inter-engagement of the tools is precisely the same as in the construction shown in Figs. 1 to 4, the segmental gears operating in the same way as the arms F F and connecting links G to as to effect an alternate rer lutics in pp si e directicae to the series of tools connected in series, the tools being'brought into action on the work and acting upon the work in exactly the same way. The necessary stop to prevent the tools from rotating too far is, in this construction, effected by the contact of the back of the tool and the flattened surface of the segment, as indicated in Fig. 9 at I. This contact, it will be understood, is not efiected so long as the machine is pressed against the work and is only provided as a stop to prevent the tools from getting into a position where they would not work properly in connection with the plate to be cleaned.

In the construction of Figs. to 9, the carrier discs D, D, are shown oi such diameter as to contact with the plate H to be cleaned and this may be advantageous in Cases where the guide rolls C, C are not used.

Having now described my invention, what lclaim as new and desire tosecure by Let tors Patent, is:

1. A plate scraping machine having in combination a rotating tool carrier, a multiple series of symmetrically disposed pivots carried thereby, a series 01 tools carried by said pivots and means connecting said tools in series as described and so that an angular movement of a tool on its pivot will communicate angular movement in a reverse direction to the adjacent tools whereby the tools are brought successively into contact with the plate to be scraped and whereby each tool is held pressed against the work while an adjacent tool is in contact there with. I

2. ;A plate scraping machine having in combination a rotating tool carrier, a multiple series of symmetrically disposed pivots carried thereby, a series of tools carried by said pivots, means connecting said tools in series as described and so that an angular movement of a tool on its pivot will communicate angular movement in a reverse direction to the adjacent tools whereby the tools are brought successively into contact with the plate to be scraped and whereby each tool is held pressed against the work whilean adjacent tool is in contact therewith and stops limiting the angular movements of the tools on their pivots. 3.;A plate scraping machine having in combination a rotating tool carrier, a multiple series of segmental gear wheels interengaged in series so as to rotate together in alternately opposite directions, said segmental gears being pivoted on the tool car rier and a series of tools extending out from the segmental gears so as to be brought successively in contact with the work as the tool carrier revolves and held pressed against the work while an adjacent toolis in contact therewith.

HUBERT F. YELDING.

till 

